[Boatanchors] Suppressor grid modulation

[D C *Mac* Macdonald]

4-125 and 4-400 series are pentodes?  Since when?
The "4" identifies them as tetrodes.  The "5"
identifies the 5-125 series as pentodes.
 
73 - Mac, K2GKK/5
(Since 30 Nov 53)
Oklahoma City, OK



_______________________________________
> Date: Wed, 27 Jan 2010 09:42:47 -0800
> From: ianmwilson73 at gmail.com
> To: boatanchors at mailman.qth.net
> Subject: Re: [Boatanchors] Suppressor grid modulation
> 
> The 4-125A/4-400A are pentodes. I notice that the 5-125B is a pentode and
> has g3
> voltages specified (a sign that it's a true suppressor grid).
> 
> 73, ian K3IMW